28684760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55163}}^1$

素因数の和:55187

約数の個数: 32

約数和(自身を含む): 69506640

約数和(自身を除く): 40821880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55163, 110326, 220652, 275815, 441304, 551630, 717119, 1103260, 1434238, 2206520, 2868476, 3585595, 5736952, 7171190, 14342380, 28684760]

約数ペア:

[(1, 28684760), (2, 14342380), (4, 7171190), (5, 5736952), (8, 3585595), (10, 2868476), (13, 2206520), (20, 1434238), (26, 1103260), (40, 717119), (52, 551630), (65, 441304), (104, 275815), (130, 220652), (260, 110326), (520, 55163)]